After practicing the Sleep Elixir Skill all night, Chen Jue got up and used [Inner Vision] to discover that the cells near his brain's pineal gland were indeed slightly stronger than they had been the night before.
His intelligence and constitution attributes had also risen slightly, by just 0.01. But if his attributes could increase this steadily every day, then the effects of this [Hidden Dragon Sleeping Elixir Skill] might well surpass those of the several methods Chen Jue had casually created himself.
Of course, besides improving constitution, extending life, and sharpening the mind, the most important benefit of deep sleep was clearing "garbage" out of the brain.
While a person was awake, blood circulated constantly through the brain, supplying it with energy while also producing metabolic waste.
Only during deep sleep, when large amounts of blood withdrew from the brain's blood vessels and freed up space, could cerebrospinal fluid enter the brain to rinse and clean it, carrying away large amounts of toxins and metabolic waste along the spine into the lymphatic system, before finally entering the body's excretory system.
Although the [Fasting and Purification Method] Chen Jue had previously created also had some detoxifying effects that cleared waste from the brain, it targeted detoxification through the circulation of the entire body. It was not as specialized as the [Hidden Dragon Sleeping Elixir Skill], which acted solely on the brain's pineal gland.
Methods that continually improve physical fitness are clearly on a much higher level than fist techniques and stance training.
Once I grind out some more unallocated attribute points, I'll see if I can fuse [Macrocosmic and Microcosmic Orbits Circulation], [Fasting and Purification Method], [Spirit Refining Longevity Method], and this [Hidden Dragon Sleeping Elixir Skill]. Chen Jue thought as he stared at those advanced skills on the panel.